Just upgraded to WordPress 2.0.1, which was way too easy:
# in my blog.w-nz.com htdocs folder
tar -xvzpf latest.tar.gz
cp wordpress/* . -R
Visit the upgrade script, which consisted out of one simple click and I was done.
PS. I reuploaded my logo and google analytics code too, but they don’t count, really (even though they consisted out of more work that the rest of the upgrade).